Improvement in car-couplings



AH. E. MARCHAND.

. n Car-Couplings.

. N0.ll50,768. Patented May12.1874.

FIG.

' of a vibrating or swinging trigger, hung from as to prevent thetrigger from falling through f a beak or rib, Gr, which is constantlydisposed HENRYE. MARCHAND, OF IITTSBURG, PENNSYLVANIA.

IMPROVEMENT IN Specification forming part of Letters Patent No.

CAR-COUPLINGS.

monos, dated May 12, 1874; application sied April l0, 1874.

To all whom it may concern: A

Beit known that I, HENRY E. MARCHAND, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Car-Gouplings, of which the following is aspecification:

This invention relates to certain improvements upon that class ofcar-couplings in which a vibrating or gravitating trigger is employedfor retaining the coupling-pin in an elevated position until the link,entering the draw-head, forces the trigger back to permit the pin todrop.

This invention consists in the arrangement the upper side of thedraw-bar, a sliding coupling-pin permanently arranged in the drawbar,and a link which is copfned in place and prevented from displacement bythe trigger, as hereinafter fully described.

In the accompanying drawings, Figure l is a longitudinal sectional viewof a draw-head, representing the coupling-pin in an elevated position.Fig. 2 is a similar view, representing the coupling-link and trigger inan operative position, and the permanent couplinglink withdrawn fromtheV draw-bar. Fig. 3 is a perspective view of the draw-head. j

The draw head or bar A is of the usual construction, and in the top andbottom of the salne are formed eyes and' slots B C, as is clearly shownin Fig. 3. The eye in the base of the'draw-head is made larger than theupper one, so as to permit the vibrating triggerpin l) to be passedentirely. The `same and `the upper eye is made sufficiently large topermit the passage of the upp'er reduced portion or shank E of the'vibrating trigger. The upper end of the triggeris provided with lateralprojections F, whichrest on opposite sides of e of the slot B in the topof the draw-head, so

the same, and also to act as journal pins or bearings, upon which thetrigger vlbrates. 'Ihe trigger is provided, at its lower end, withwithin the lower' slot C, so as to limit the backward movement of thetrigger by causing the beak to strike the rear wall of the slot when thetrigger is forced-back. The coupling -pin H is formed, at its upper end,with the ordinary head a., vso as to limit the downward movement of thepin, and at its lower end it possesses a head, I, which is formed orapplied after the pin has been passed through the draw-head, so as toprevent the pin from being entirely withdrawn through the top of thesame. The head or flange may be formed by riveting the lower end of thepin, or a detachable head may be applied to the latter by ascrew-connection or otherwise. The permanent link K of the draw-barV isapplied in positionbefore the attachment of the trigger andcoupling-pin, the trigger limiting the forward movement of the link andpreventing the same from being withdrawn; and, when the link is inoperation,the trigger and pin will conjointly serve to receive thedraft-strain to which the link is subjected. The coupling-link isprovided with a tongue, L, at its rear end, which enters an opening, M,in the base of the draw-l bar, when the link is pushed back into thesame, as shown in Fig. l. rIhe vibrating trigger suspended from the topof the draw-head will always tend to swing in a forward directionwhenever the pin is elevated, and thus it automatically serves to setthe pin readyfor coupling by causing a projecting shoulder or ledge, N,on the forward face of the trigger, to swing under the lower head orlian ge of the coupling-pin. I

When the pin is thus set, the entering link` of an opposite draw-barwill force the trigger in a backward direction, so as to remove thesupport from the pin in order to permit the same to drop through thelink and the eye in the bottom of the draw-bar.

Having thus described my invention, what I claim as new is- A draw-barhaving atrigger, a couplingpin, and a link, the link permanently heldwithin the draw-bar by the trigger, and the trigger permanently confinedin place,V by the coupling-pin, all combined substantially as described.I

In testimony that I claim the foregoing I have hereunto set my hand this18th day of March, V1874.

HENRY E. MARCHAND.

Witnesses WM. J. PEYTON, A A. H. Nonnrs.

ATENT Orrrcn.

